Writing about jj and git this morning and lo and behold, what should pop up: lwn.net/Articles/105... Even the folks maintaining git are seeing the light on jj

I have so many things that I could say about git that I am struggling to say what I need to say about git.

Got reminded today of the time when I got convinced not to use `Dispatchers.Default` or `Dispatchers.IO` in tests, which @swank.ca dug up this blog post about: publicobject.com/2022/03/14/u... Worth a reread!

This is super rad and exactly the kind of unforeseen workflow I would expect to arise from the concepts jj gives you It may not even make sense if you're too git brained. But it works!

Well, now Matt Levine has written about it, so you don't need to read what I said anymore: www.bloomberg.com/opinion/news... See his analysis on the deal, but essentially yeah — it's financial engineering to gamble on the bubble with the dead shell of Allbirds, Inc.

Okay, the Allbirds deal is everywhere today because hah hah, but I actually read the press release and it is weirder than hah hah. 1/x ir.allbirds.com/news-release...

We're wrapping up our migration to Metro internally for Square Android. I summarized some of our challenges and steps we took in a blog post. If you use Dagger 2 for a Kotlin project, then you should migrate to Metro sooner rather than later. engineering.block.xyz/blog/metro-m...

Big +1. Joel and Jacob deserve so much credit for this. A project this big, hit with this kind of organizational instability...it's a real relay race. I know Cash also benefitted from their work.

I literally cannot keep up with @edzitron.com, but if you want to understand why data center construction is politically toxic, this whole passage is 🔥🔥🔥

Metro 1.0.0-RC1 is out now! Last call for feedback on the public, non-experimental runtime/metrox/gradle APIs! github.com/ZacSweers/metro/re...

Truth!

So I'm finally to the point where I'm like, "Awesome. I think I understand Kotlin's dispatcher suite. Let's just type it out" And the entire time I've been thinking "limitedParallelism... that's probably a pretty basic passthrough. Probably don't need to worry about it too much" Might not be true

This is the good shit.

I do think there is something to the idea that the intransigence of the pro/anti-AI public debate is more due to power imbalance than it is about the tools themselves. It's less about AI and its outputs than it is about being forced to use AI and forced to consume AI generated content.

Generative AI is currently helping me waste my afternoon by understanding Kotlin dispatchers in more detail than I honestly need to in order to accomplish the task at hand Which is writing about Kotlin dispatchers

To illustrate my point, a quick pop quiz: Running this code, which calls a method `reportThreads` that just shows the names of all the threads the JVM knows about, on my Mac.... 1. How many Dispatchers threads before? 2. How many Dispatchers threads after? 3. What, roughly, are their names?

Dispatchers.Default and Dispatchers.IO are more difficult to understand than I had previously anticipated.

Objective writing from engineering focused sources about AI is worth its weight in gold: lalitm.com/post/buildin...

Ever try and get a gsuite organization to use anything other than Meet for VC meetings? You could lay out a solid case that engineers should always use something like Tuple for 1:1s, but - doesn't matter! Your happy cohort will disappear like a sandcastle if not doggedly maintained.

I've been working on my blog lately, and starting to write some, and this is the kind of thing I am thinking about. Surely someone has to understand all this stuff, right? Surely we have to talk about it? It's hard not to have doubt, of course... dbushell.com/2026/04/01/i...

Working on my much neglected blog today. dbushell.com/2026/04/01/i...

Today's the day.

My hot take here is that going remote has not been, on the whole, a positive change for individual contributors.

Brain says, "Now that you can use an LLM to help do the work, you can work on your publishing pipeline first, THEN work on your writing, instead of the other way around" This is still a lie. It was always a lie

Ah, you think No Kings is going to accomplish anything? It's nothing compared to my approach of never being around other people for any reason

github.com/Kotlin/kotli... has details why it was slow

Let's not talk about how slow they were previously

Hard to understate how massive of a performance gain this is. This is going to make your app faster with no work other than upgrading AGP (I know that it is not easy to do)

What an incredible read. I can't help but think of the product influencer crowing about no longer even needing to care about deployment and storage on vibe coded product when I read these two paras:

I’m going to wheatpaste this article to telephone poles until everyone reads it

I am not sure how to say this without coming across as a complete hater, but Sora was an incredible YTMND

Jokes aside, as a practical matter the only reason to implement a 24h waiting period is to make it super clear that we aren't in charge of the hardware that we paid for and own

Raffi's band was pretty tight actually

These three toots are all about the same thing actaully

This series is so, so good. Really crunchy to work through as an engineer seeking to understand. youtu.be/HgNKa9UlRF8?...

God, I love jj. Using bare git feels like eating soup with a fork now.

Taking a break from thinking about genAI thinkpieces to grab my old resume pdf from my gmail outbox, feed it into Codex, and generate LaTeX source that is close enough to the original that I lost It is so nice to be able to have fun doing this kind of stupid shit.

Good read, but I dunno... e.g.: "The job of a code reviewer isn't to review code. It's to figure out how to obsolete their code review comment, that whole class of comment, in all future cases, until you don't need their reviews at all anymore." Dunno about that. apenwarr.ca/log/20260316

Have seen it.

This is yet another reminder that using AI doesn't make the product better, when you don't have a team that is customer-obsessed / product obsessed. And a team that is customer/product-obsessed without AI (or very little AI) will still run laps around one with AI...

So, in this world of increasing concentration of corporate wealth and increasing housing costs and rents, we have a bipartisan housing bill that solves a laundry list of zoning issues. It also has restrictions on investors owning 350+ homes. Guess what Abundance dems are flipping out about?

Whenever I hear someone say that PMs are vibe coding features in production, I always want to ask if those PMs are on call for when those features inevitably break in production? Note: All features eventually break-in production.

The biggest change in software development is not AI code, but a permission structure for disregarding quality in the pursuit of velocity

Good writeup. This is indeed a real and urgent problem. rishi.baldawa.com/posts/review...

Trump just pardoned Ticketmaster. www.bigtechontrial.com/p/a-wild-day...

Dare is 100% correct in his point, *and also*, unrelated to that point: LastPass was bought by private equity, which got rid of the load bearing security engineering, then divested LastPass before the catastrophic security incidents. So: know your vendor's strategy!

"Providing shareholder value is a capitalist’s euphemism for transferring power from labour to capital."

The whole thread is worth reading. Those of us who were in the trenches at Block in the past 6mo have so, so much to process about what has happened there. A real thing truly hove into view this past year, but it felt like our executive class did not see it with rational clarity.